Miele H6800BM Operating And Installation Instructions page 21

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You could injure yourself on the open oven door or trip over it.
Avoid leaving the door open unnecessarily.
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The door can support a maximum weight of 8 kg.
Do not sit on or lean against an open door, and do not place heavy
objects on it. Also make sure that nothing can get trapped between
the door and the oven cavity. The oven could get damaged.
Warning and Safety instructions
21